Income Inequality in Washington County, MD was 13.66056 Ratio in January of 2022, according to the United States Federal Reserve. Historically, Income Inequality in Washington County, MD reached a record high of 14.05965 in January of 2021 and a record low of 11.25351 in January of 2012. Trading Economics provides the current actual value, an historical data chart and related indicators for Income Inequality in Washington County, MD - last updated from the United States Federal Reserve on May of 2024.